Sole-pressing machine.



H. A. DAVENPORT. SOLE PRESSING MACHINE- APPLICATION FILED APR.24, 1916.

' Patented Jan. 1, 1918.

* s rains Parana onnron HERMAN A. DAVENPORT, OF BROCKTON, MASSACHUSETTS, ASSIGNOR'TO UNITED SHOE MACHINERY COMPANY, OF PATERSON, NEW JERSEY, A' CORPORATION 0E 'ZN'EVV 5 JERSEY.

To all whom it may concern:

Be it known that I, HERMAN A. DAVEN- PORT, a citizen of the United States, residing at Brockton, in the county of Plymouth and State of Massachusetts, have invented certain new and useful Improvements in Sole:

Pressing Machines; and I do hereby declare. the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The present invention relates to machines for shaping the soles of boots and shoes, and more particularly to machines of this type employed for laying the sole upon a lasted boot or shoe.

In a certain type of machine employed for laying the soles ofvboots and shoes a flexible pressing pad of rubber or other suitable material is supported at a plurality of points by mechanism which is arranged to equalize the pressure exerted by all portions of the pad. This type of pressing pad and supporting mechanism is disclosed in the patent to Davenport, No. 942,133, dated December 7 1909, and the sole laying machine in which the pressing'pad is embodied is disclosedjn the patent to Davenport, No. 1,066,473, dated July 8, 1913.-

It is desirable, under certain conditions, torelieve the pressure exerted by the pressing pad upon some portion of the shoe sole, more particularly the toe, and it is the object of the present invention to provide certain improvements in a machine of the above described type which will enable the pressure upon difi'erent portions of the shoe sole to be regulated within desired limits.

To this end a feature of the invention contemplates the provision in a sole laying machine havinga shoe supporting jack, a-

coiiperating flem'ble pressmg pad, and mechanism for supporting the pad arranged to equalize the ressure exerted by all portions of the pa of a pressure regulating member engaging with the pad adjacent a portion of the shoe sole to relieve the pressure exerted by the pad upon that portion of the sole, I Still ..iurther. features of the invention consist in -certainnovel features of construc- 171011," combinations and arrangements of parts hereinafter described and claimed, the ad- Speeification of Letters Patent.

SOLE-PRESSING MACHINE.

vantages of which will be obvious to those skilled in theart from the-[following description. I i

In the accompanying drawings illustrat ing the preferred form of the invention Figure 1 represents apartial side elevation ofa machine embodying the features of the invention, Fig. 2 'is a detail illustrating the toe pressure regulating member, and cooperating toe rest, and Fig. 3 is a detail illus trating an elevation of the pressure regulat ing member and toe rest shown in Fig. 2.

In" laying a flat sole upon the bottom of a lasted boot or shoe, it is essential that the sole shall engage with substantially all portions of the shoe bottom, and be shaped approximately thereto. In orderto perform this sole laying operation properly, especially upon shoes having rounded or steep shanks, it is desirable that the pressure exerted upon the shank portion of the sole shall be greater than the pressure exerted upon the toe or heel portions of the sole. I In the 1 Batented Jan, 1,1918.; Application filed April 24, 1916. seriaiNeeain,

type of machine towhich the present invention relates, the ressure exerted by all portions of the sole aying pad is automatically equalized, and in some instances it is found that a pressure sufficient to properly secure the shank portion of the sole tothe shoe bot tom is too heavy for the toe portion of the sole. It will be obvious. to those skilled in the art that too great a pressure exerted upon the ends of the sole, more particularly the toe, will tend to cause the toe to sink into the'flexible pad, rounding over the projecting margins of the sole. In the present invention means are provided for relieving exerted upon the other portions of the sole. To this end a pressure regulating member is provided with a pad engaging face positioned at substantially the height of the shoe sole, and arranged to engagewith the padadjacent the toe portion of the sole. In the illustrated embodiment of the invention a foot is secured to the toe post and has a pad engaging face surrounding the toe portion of the shoe to resist the thrust exerted by this portion of the pad. The foot is supported unyieldingly, and has the added function of causing the pad to automatically exert a greater pressure than otherwise upon those the pressure exerted by the pad upon the toe of the shoe without diminishing the pressure ortions of the sole not protected by the foot. This will be obvious to those skilled in the art when it is considered that the movement of the toe portion of the pad is positively limited by the foot, and the pad as a whole will therefore pivot about the toe and tend to bear upon the shank and remaining portions of the sole with an added pressure.

The machine comprises the usual stationary head 1 mounted at the upper end of a frame 2, and slidingly supporting a heel post 3 and cooperating toe post 4. The shoe sole is engaged from beneath by a flexible pressing pad 10 supported at a plurality of points by pad supports 11 which are individually supported by a system of equalizing levers mounted upon a block 12 which is yieldingly supported in a pad box 14. The pad box and pad as a whole are moved vertically upon the frame 2 to cause the pressing pad to engage with the shoe sole in the usual manner. This mechanism is fully shown and described in the patents to Davenport hereinbefore referred to.

The pressure normally exerted upon the toe of the shoe is relieved by a foot 15 secured to the lower end of the toe post 4, and having a pad engaging face 16, as shown clearly in Figs. 2 and 3 positioned at approximately the height of the shoe sole, and curved to conform to the curvature of the toe portion of the shoe. The pad engaging face of the foot serves to resist the thrust of the pad upon that portion of the sole which is adjacent to the foot, and cause an added pressure to be exerted upon other portions of the sole. A foot 15 is provided with a grooved lip 17 which engages with a correspondingly formed face upon the toe post 4:, and is secured thereto by a threaded fastening 18. The opposite face of the toe post is provided with a plate 19 pivoted thereto at 20 and secured atits lower end to the foot by a threaded fastening 21. The toe portion of the lasted shoe is supported by a toe rest 23 of flexible material secured to the lower end of a slide 24 movable vertically in the foot, and normally retained in a depressed position by a spring 25 received in a recess 26 formed in the foot, andengaging with the top of the slide. The toe rest is retained against angular movement by a pin 27 projecting laterally from the slide, and received in a vertical slot 28 formed in the foot. The toe rest 23 is provided with ametal back plate 29 supported upon the reduced end of the slide 24 and the toe rest and back plate are secured to the slide by a fiasgening 30 threaded into the end of the s 1 e.

1,251,,see

ranged to equalize the pressure exerted by I all portions of the pad, and a pressure regulating member carried by the jack and engaging with the pad adjacent to a portion of the shoe sole to relieve the pressure exerted by the pad upon that portion of the sole.

2. A sole laying machine comprising a shoe supporting jack, a flexible pressing pad, means for yieldingly supporting the pad arranged to equalize the pressure exerted by all portions of the pad, a pressure regulating member having a pad engaging face positioned at the level of the shoe sole and adjacent one portion of the sole, and arranged to relieve the pressure exerted by the pad upon that portion of the sole, and means for unyieldingly supporting the pressure regulating member.

3 A sole laying machine comprising a flexible pressing pad, means for supporting the pad arranged to equalize the pressure exerted by all portions of the pad, a heel post, and cooperating toe post for supporting a lasted shoe, and a pressure regulating member secured to the toe post and surroundlng the toe portion of the shoe to relieve the pressure exerted by the pad upon that portion of the sole.

4. A sole laying machine comprising a heel post and cooperating toe post for supporting a lasted shoe, a flexible pressing pad for engaging with the shoe bottom, means for supporting the pad, and a curved foot secured to the toe post and arranged to engage with the pad about the toe portion of the shoe.

5. A sole laying machine comprising a heel post and cooperating toe post arranged to support a lasted shoe, a flexlble pressing pad engaging with the shoe bottom, means for supporting the pad, a curved foot secured to the lower end of the toe post, and having a pad engaging face surrounding the toe of the shoe, and a toe rest yieldingly supported in the foot.

HERMAN A. DAVENPORT. 

